/*
 * Copyright 2012 Gregor Schauer
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package at.schauer.gregor.vienna.convert.vienna.util;

import at.schauer.gregor.vienna.convert.factory.ConverterFactory;
import at.schauer.gregor.vienna.convert.factory.ConverterFactoryAware;
import at.schauer.gregor.vienna.convert.vienna.base.AbstractContainerConverter;
import com.google.common.collect.Iterators;

import javax.annotation.Nonnull;
import java.lang.reflect.Array;
import java.util.Iterator;

/**
 * @author Gregor Schauer
 */
public class ArrayContainerConverter<T, E extends T> extends AbstractContainerConverter<T[], E> implements ConverterFactoryAware {
	public ArrayContainerConverter() {
		super("[{", "}]");
	}

	@Override
	@SuppressWarnings("unchecked")
	protected T[] createInstance(Class<? extends T[]> targetClass, int size) {
		return (T[]) Array.newInstance(targetClass.getComponentType(), size);
	}

	@Override
	protected void add(T[] instance, int i, E elem) {
		instance[i] = elem;
	}

	@Override
	@SuppressWarnings("unchecked")
	protected Iterator<E> getElements(T... target) {
		return (Iterator<E>) Iterators.forArray(target);
	}

	@Override
	@SuppressWarnings("unchecked")
	public void setConverterFactory(@Nonnull ConverterFactory converterFactory) {
		converterFactory.register(Object[].class, this);
	}
}
